McDonnell & Miller FS4-3 is a universal, general purpose liquid flow switch, designed for starting and stopping a wide range of electrically-operated equipment (pumps, alarms, burners, etc.). Integral screw for adjusting flow sensitivity. NEMA 1 enclosure for indoor use only. Comes with (4) rigid stainless steel paddles for use with pipe sizes 1" through 8".
Cross-References:
McDonnell & Miller: FS-251
Hydrolevel: FS200
Taco: IFS01/02/H1/H2
Features:
Includes (4): 1", 2", 3", & 6" rigid stainless steel paddles for fitting into pipes of different sizes
Two electrical knock-outs allow connection from both sides
Starts or stops electrical equipment, such as pumps, alarms, motors, burners, and metering devices, when water flow is detected in a system
Replaces common flow switches from Johnson/Penn, Taco, Watts, Hydrolevel, and other manufacturers
Suitable for pipe sizes from 1" to 8"
Adjustable flow senstitivity via internal screw
cULus listed
Technical Specifications:
Electrical Specs: SPDT (Relay Type), NEMA 1 Enclosure
Application: 1" - 8" pipe sizes
Flow Rates: Refer to image specs for minimum and maximum rates for 1" - 8" pipe sizes
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